题目

小明看到运动员拉弓射箭时，弓拉得越弯，箭射得越远．小明猜想：弹性势能的大小可能与物体的弹性形变有关。（1）为验证其猜想是否正确，他设计了如下实验（弹簧被压缩后未超过其弹性限度）如图所示，将同一个弹簧压缩    ▲    （选填“相同”或“不同”）的长度，将小球置于弹簧的右端，松开后小球碰到同一位置的相同木块上，分析比较木块   ▲   ，从而比较弹性势能的大小。（2）若水平面绝对光滑，本实验将   ▲  （选填“能A boy selling magazines walked up to a house people seldom visited. The house was old and the owner   36  came out. When he did come out he wouldn’t say hello to anybody   37  simply stared at them.The boy knocked on the door and   38  . As he was ready to   39  away, the door slowly opened. “What do you want?” the old man said.“Uh, sir, I’m selling these magazines and I was   40  if you’d like to buy one.” The old man   41  stared at the boy. The boy could see the inside of the house and   42  some dog figurines（小雕像）. “Do you   43  dogs?” the boy asked. “Yes, I do. They’re my family here and they’re all I have.” The boy felt sorry for the man, as he seemed to be very   44  . “I’ve a magazine here for collectors. It’s perfect for you. I also have one about dogs since you like dogs so much.” But the old man said, “I need   45  of the magazines, now goodbye.”The boy was sad. He went home and then an idea   46  to him. He had a little dog figurine. He walked back to the old man’s house with the   47 . He knocked on the door again and this time the old man came right to the door. “Boy, I             48   I told you no magazines.”“No, sir. I know that. I wanted to bring you a   49 . ” The boy handed him the figurine and the old man’s face   50 . “It’s a Golden Retriever. I have one at home. This one is   51  you.” The old man was   52 ; no one had ever shown him so much   53 . “Boy, you have a kind   54 . Thank you!” From that day on the old man  55  coming out of the house and talking with people. 小题1:A．hardlyB．neverC．regularlyD．nearly小题2:A．soB．whenC．asD．but小题3:A．hurriedB．leftC．remainedD．waited小题4:A．walkB．runC．escapeD．drive小题5:A．doubtingB．wondering C．sayingD．hoping小题6:A．everB．yetC．justD．still小题7:A．lovedB．sensedC．noticed D．contacted小题8:A．helpB．collectC．raiseD．like小题9:A．aloneB．cruelC．lonelyD．terrible小题10:A．nothingB．noneC．eitherD．some小题11:A．happenedB．broughtC．reachedD．occurred小题12:A．fearB．magazineC．ideaD．figurine小题13:A．imaginedB．thoughtC．wishedD．expected小题14:A．friendB．giftC．dogD．book小题15:A．lit upB．went upC．grew upD．turned up小题16:A．forB．onC．withD．in小题17:A．calmB．encouragedC．disappointedD．surprised小题18:A．pityB．happinessC．politenessD．kindness小题19:A．eyeB．heartC．handD．head小题20:A．continuedB．avoidedC．startedD．risked